hbase基本命令 hbase的基本操作 _hbase的基本操作

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首先通過docker安裝Hbase
docker search hbase docker pull harisekhon/hbase啟動hbase鏡像

docker run -d -p 2181:2181 -p 8080:8080 -p 8085:8085 -p 9090:9090 -p 9095:9095 -p 16000:16000 -p 16010:16010 -p 16201:16201 -p 16301:16301 -p 16030:16030 -p 16020:16020 --name hbase001 harisekhon/hbase

訪問hbase
訪問localhost:16010

hbase命令行操作
docker exec -it hbase001 bash hbase shell如上命令操作之后我們就進入了hbase的命令行操作模式：
下面，我們創建一個namespace為default，表名為test，列族column family為cf的表： create ‘test’,’cf’ 通過list命令可以查看所有的表：list

刪除表：先disable,再drop
disable 'test' drop 'test'新增數據操作

put 'test','1','cf:name','flume'put 'test','1','cf:age','18'put 'test','2','cf:name','hbase'put 'test','2','cf:age','20'put 'test','3','cf:name','hadoop'put 'test','3','cf:age','22'put 'test','11','cf:name','spark'put 'test','11','cf:age','24'put 'test','21','cf:name','hive'put 'test','21','cf:age','30'

刪除數據操作
deleteall 'test','3';-- 刪除該rowkey下的所有數據delete 'test','3','cf:name' -- 刪除某一cell的數據查看數據

HBase中有兩個用于查看數據的命令：1. scan命令，用于查看某個表的全部數據；2. get命令，用于查看表的某一行數據

修改數據同樣也是put操作
比如將行鍵為 2015003 的學生 age 改為 25：put 'student','2015003','age','25'如上是命令行的一些基本操作，詳細操作可以查看官網：
http://abloz.com/hbase/book.html下面是通過java api的方式操作hbase添加maven依賴

<dependency><groupId>org.apache.hbase</groupId><artifactId>hbase-client</artifactId><version>2.1.3</version></dependency>

測試工具欄如下：

package com.example.redisiondemo.utils;import org.apache.hadoop.conf.Configuration;import org.apache.hadoop.hbase.*;import org.apache.hadoop.hbase.client.*;import org.apache.hadoop.hbase.client.Admin;import org.apache.hadoop.hbase.util.Bytes;import java.io.IOException;import java.util.ArrayList;import java.util.List;public class HbaseTest {private static Admin admin;private static final String COLUMNS_FAMILY_1 = "cf1";private static final String COLUMNS_FAMILY_2 = "cf2";public static Connection initHbase() throws IOException {Configuration configuration = HBaseConfiguration.create();configuration.set("hbase.zookeeper.quorum", "127.0.0.1");configuration.set("hbase.zookeeper.property.clientPort", "2181");configuration.set("hbase.master", "127.0.0.1:16010");Connection connection = ConnectionFactory.createConnection(configuration);return connection;}//創建表 createpublic static void createTable(TableName tableName, String[] cols) throws IOException {admin = initHbase().getAdmin();if (admin.tableExists(tableName)) {System.out.println("Table Already Exists！");} else {HTableDescriptor hTableDescriptor = new HTableDescriptor(tableName);for (String col : cols) {HColumnDescriptor hColumnDescriptor = new HColumnDescriptor(col);hTableDescriptor.addFamily(hColumnDescriptor);}admin.createTable(hTableDescriptor);System.out.println("Table Create Successful");}}public static TableName getTbName(String tableName) {return TableName.valueOf(tableName);}// 刪除表 droppublic static void deleteTable(TableName tableName) throws IOException {admin = initHbase().getAdmin();if (admin.tableExists(tableName)) {admin.disableTable(tableName);admin.deleteTable(tableName);System.out.println("Table Delete Successful");} else {System.out.println("Table does not exist!");}} //put 插入數據public static void insertData(TableName tableName, Student student) throws IOException {Put put = new Put(Bytes.toBytes(student.getId()));put.addColumn(Bytes.toBytes(COLUMNS_FAMILY_1), Bytes.toBytes("name"), Bytes.toBytes(student.getName()));put.addColumn(Bytes.toBytes(COLUMNS_FAMILY_1), Bytes.toBytes("age"), Bytes.toBytes(student.getAge()));initHbase().getTable(tableName).put(put);System.out.println("Data insert success:" + student.toString());}// delete 刪除數據public static void deleteData(TableName tableName, String rowKey) throws IOException {Delete delete = new Delete(Bytes.toBytes(rowKey));// 指定rowKey//delete = delete.addColumn(Bytes.toBytes(COLUMNS_FAMILY_1), Bytes.toBytes("name"));// 指定column，也可以不指定，刪除該rowKey的所有columninitHbase().getTable(tableName).delete(delete);System.out.println("Delete Success");}// scan數據public static List<Student> allScan(TableName tableName) throws IOException {ResultScanner results = initHbase().getTable(tableName).getScanner(new Scan().addFamily(Bytes.toBytes("cf1")));List<String> list = new ArrayList<>();for (Result result : results) {Student student = new Student();for (Cell cell : result.rawCells()) {String colName = Bytes.toString(cell.getQualifierArray(), cell.getQualifierOffset(), cell.getQualifierLength());String value = http://www.mnbkw.com/jxjc/188987/Bytes.toString(cell.getValueArray(), cell.getValueOffset(), cell.getValueLength());}}return null;}// 根據rowkey get數據public static Student singleGet(TableName tableName, String rowKey) throws IOException {Student student = new Student();student.setId(rowKey);Get get = new Get(Bytes.toBytes(rowKey));if (!get.isCheckExistenceOnly()) {Result result = initHbase().getTable(tableName).get(get);for (Cell cell : result.rawCells()) {String colName = Bytes.toString(cell.getQualifierArray(), cell.getQualifierOffset(), cell.getQualifierLength());String value = Bytes.toString(cell.getValueArray(), cell.getValueOffset(), cell.getValueLength());switch (colName) {case"name":student.setName(value);break;case "age":student.setAge(value);break;default:System.out.println("unknown columns");}}}System.out.println(student.toString());return student;}// 查詢指定Cell數據public static String getCell(TableName tableName, String rowKey, String cf, String column) throws IOException {Get get = new Get(Bytes.toBytes(rowKey));String rst = null;if (!get.isCheckExistenceOnly()) {get = get.addColumn(Bytes.toBytes(cf), Bytes.toBytes(column));try {Result result = initHbase().getTable(tableName).get(get);byte[] resByte = result.getValue(Bytes.toBytes(cf), Bytes.toBytes(column));rst = Bytes.toString(resByte);} catch (Exception exception) {System.out.printf("columnFamily or column does not exists");}}System.out.println("Value is: " + rst);return rst;}public static void main(String[] args) throws IOException{Student student = new Student();student.setId("1");student.setName("hzp");student.setAge("18");String table = "student";//createTable(getTbName(table), new String[]{COLUMNS_FAMILY_1, COLUMNS_FAMILY_2});//deleteTable(getTbName(table));insertData(getTbName(table), student);//deleteData(getTbName(table), "1");//singleGet(getTbName(table), "2");//getCell(getTbName(table), "1", "cf1", "name");}}

【hbase基本命令 hbase的基本操作】

student實體package com.example.redisiondemo.utils;public class Student {private String id;private String name;private String age;public String getId() {return id;}public void setId(String id) {this.id = id;}public String getName() {return name;}@Overridepublic String toString() {return "Student{" +"id='" + id + ''' +", name='" + name + ''' +", age='" + age + ''' +'}';}public void setName(String name) {this.name = name;}public String getAge() {return age;}public void setAge(String age) {this.age = age;}}